@misc{indiciaebe7854a77270,
  title = {Projection operator in the boson expansion techniques.},
  author = {J Dobe and SP Ivanova and RV Jolos and R Pedrosa},
  year = {1990},
  doi = {10.1103/physrevc.41.1840},
  url = {https://pubmed.ncbi.nlm.nih.gov/9966532/},
  note = {Source identifier: 9966532}
}